TW202222148A - Automatic water supply interruption device in which a buoy can smoothly move up and down - Google Patents

Abstract

This invention provides an automatic water supply interruption device in which a buoy can smoothly move up and down. The automatic water supply interruption device (3) is provided with: a water level gauge unit (4) for detecting whether a water level in a farm (1) increases to a predetermined water level, and a valve unit (5) arranged in a water supply path (2) for supplying water to the farm (1). The valve unit (5) is equipped with a valve (6). If the water level gauge unit (4) detects the predetermined water level, the water supply path (2) is moved from an open position to a closed position. The water level gauge unit (4) is provided with a water level gauge body (7), a buoy (8) floating on the water in the farm (1) independently from the water level gauge body (7) and a fixing pile (9) fixed by being struck into the soil (1a) of the farm (1). The water level gauge body (7) is equipped with a body part (10) fixed at any position in the longitudinal direction of the fixing pile (9), an action part (11) lifted by the rising buoy (8) rising along with the water level, and a detection part (12) arranged at the body part (10) and moved and coupled with the action part (11) to detect the predetermined water level.

Description

Water supply automatic cut-off device

The present invention relates to an automatic water supply shutoff device, which is provided with a water level gauge unit and can automatically shut off a water supply passage for supplying water to farmland.

A conventional water supply automatic shut-off device can automatically shut off a water supply channel for supplying water to farmland, and is composed of a water level gauge unit installed in the farmland and a valve body unit installed in the water supply channel (for example, refer to Patent Documents 1 and 2). ). As shown in FIG. 32 , the water level gauge unit 42 constituting the water supply automatic shut-off device includes a water level gauge body 43 , a water surface buoy 44 floating on the farmland 41 , and the water level gauge body 43 positioned on the soil surface of the farmland 41 . The positioning part 45 of the height position on 41a. Here, the water level gauge body 43 detects that the water level has risen to a predetermined position based on the rise of the buoy 44 due to the rise of the water level (FIG. 32 shows the state before the buoy rises). Here, in the buoy 44, a through hole 44a that penetrates vertically is opened at the center position, and the water level gauge body 43 is provided with a cylindrical portion 43a that fits into the through hole 44a. [Prior Art Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Application Laid-Open No. 2019-165693 [Patent Document 2] Japanese Patent Application Laid-Open No. 2019-165692

[Problems to be Solved by Invention]

However, in the aforementioned water level gauge unit 42, if mud enters the fitting portion between the through hole 44a of the buoy 44 and the cylindrical portion 43a of the water level gauge body 43, the buoy 44 may be difficult to move up and down.

The present invention is to solve the above-mentioned disadvantages of the prior art, and its purpose is to provide an automatic water supply interruption device, so that the buoy can move up and down smoothly. [Technical means to solve the problem]

In order to achieve the above-mentioned object, the automatic shut-off device for water supply of the present invention is constituted by the following structures. That is, an automatic water supply shutoff device capable of automatically shutting off a water supply channel for supplying water to a farmland, comprising: a water level gauge unit installed in the farmland and detecting that the water level in the farmland has risen to a predetermined water level; Valve body unit for water supply. Here, the valve body unit includes a valve body, and when the water level gauge unit detects a predetermined water level, the water supply passage is moved from an open position to be closed to a closed position. The water level gauge unit includes a water level gauge body, a water surface buoy floating in the farmland independently of the water level gauge body, and a fixed stake driven into the soil of the farmland and fixed. Here, the main body of the water level gauge includes: a main body part fixed to an arbitrary position in the longitudinal direction of the fixing pile; , and a detecting portion that detects the predetermined water level by being provided in the main body portion and moving in conjunction with the actuating portion. Further, the buoy is provided with a guided portion which is guided by the outer peripheral surface of the guide pile driven into the soil of the farmland so as to be movable up and down directly under the actuating portion.

According to this automatic water supply interruption device, the water level gauge unit is installed in the farmland, and detects that the water level in the farmland has risen to a predetermined water level. The valve body unit is provided in the water supply passage, and when the water level gauge unit detects a predetermined water level, the valve body provided in the valve body unit moves the water supply passage from the open open position to the closed closed position. Here, the water level gauge unit includes a water level gauge body, a buoy separate and independent from the water level gauge body, and a fixed stake driven into the soil of the farmland and fixed. In addition, the main body of the water level gauge is fixed to a suitable position of the fixed pile, and the actuating part is pushed up by the buoy that rises with the rise of the water level, and the detection part provided in the main body is made by The predetermined water level is detected by moving in conjunction with the actuating portion. Here, the buoy is guided by the outer peripheral surface of the guide pile, and the guided portion can move up and down directly below the actuating portion. In this way, foreign matter such as mud is less likely to stay on the outer peripheral surface of the guide pile, and since the buoy is separated and independent from the water level gauge body (further actuating part), the buoy can smoothly move up and down.

And in this water supply automatic cut-off device, the fixed pile is also the guide pile.

In addition, the guided portion is constituted by a guided hole penetrating in the up-down direction and allowing the guide pile to penetrate therethrough.

In addition, the guide piles have plural numbers, and the guided portions are provided with plural numbers corresponding to the plural numbers of the guide piles. The buoy can move up and down stably by having a plurality of guide piles.

In addition, the buoy is provided with a plurality of driving instructing portions for indicating relative positions of the guiding piles when driving the guiding piles into the soil at a position different from the guided portion. Here, first, the plurality of guide piles are driven into the soil in cooperation with the plurality of driving instructing parts of the buoys arranged in the farmland. In this way, the relative positions of the plurality of guide piles can be accurately determined. After that, the buoy is rearranged along the outer peripheral surface of the guide pile that has been driven into the guided portion of the buoy.

And the aforesaid ditching indicating part is constituted by an indicating hole penetrating in the up-down direction and allowing the aforesaid guide pile to be inserted through. In addition, the guided portion is constituted by a guided hole penetrating vertically and allowing the guide pile to penetrate, and the guided hole is formed with a larger diameter than the indicating hole. Here, the indicator holes and the guided holes correspond to a plurality of the guide piles, and are provided in a plurality of numbers, and the relative positions of the centers of the plurality of indicator holes and the centers of the plurality of guided holes are the same. . Thereby, the gaps with the guide piles can be surely ensured for any of the plurality of holes to be guided.

In addition, the water level gauge body is provided with a retractable covering member, and the covering member is provided so as to cover between the body portion and the actuating portion so as to straddle the body portion and the actuating portion. By arranging the covering member on the water level gauge body, foreign matter can be prevented from entering between the body portion and the actuating portion.

And the said water level gauge unit is provided with the auxiliary|assistant pile for assisting the erection of the said fixed pile in addition to the said water level gauge body, the said buoy, and the said fixed pile. In addition, at least one of the fixing piles is provided with a subsidence preventing plate protruding outward, and the insertion length for inserting the soil is restricted. The auxiliary pile is provided with two pile parts extending parallel to each other on a plane obliquely intersecting with the fixed pile and driven into the soil inclined, and a connecting part connecting the pile parts from the base end side. Moreover, in the said subsidence prevention plate, the through-hole which penetrates up and down and allows the said pile part to pass through is provided in each of the two sides of the said fixed pile, and a total of two are provided. Further, the two through holes are arranged on a straight line crossing the fixing pile, or on a straight line that deviates from the straight line crossing the fixing pile in the horizontal direction of the lower portion of the inclined pile portion. .

The subsidence prevention plate is to limit the insertion length of the fixed pile into the soil by contacting the soil. Therefore, the insertion length of the fixed pile into the soil, and further, the protruding length of the fixed pile from the soil can be easily set to a predetermined length. Then, after the fixed pile is driven into the soil, the pile portion of the auxiliary pile is driven into the soil obliquely through the through hole provided in the subsidence prevention plate. With this inclined pile portion, the fixed pile can be supported and prevented from coming out of the soil. Moreover, this pile part is provided with two, and those pile parts are through-holes on both sides of the fixed pile passing through the sinking prevention plate. Therefore, the piles are arranged on both sides of the fixed pile, the fixed pile can be stabilized, and the slipping of the fixed pile can be surely prevented. Furthermore, the auxiliary pile is provided with a connecting part connecting two pile parts from the base end side, and the pile part can be easily driven into the soil by striking the connecting part.

In addition, at least one of the fixed piles is provided with a subsidence prevention plate protruding outward to limit the insertion length of the soil, and a scale based on the subsidence prevention plate is formed above the subsidence prevention plate. . In accordance with this scale, by fixing the main body of the water level gauge unit (water level gauge body) to the fixed pile, the height of the main body portion can be set at a height corresponding to the predetermined predetermined water level that the water level gauge unit should detect.

In addition, the buoy is formed in a hollow space, and includes an opening that faces the interior space that forms the hollow space to the outside, and a cover that closes the opening. As a result, by appropriately placing water or the like into the buoy through the opening, the amount of the buoy rising from the water surface can be adjusted, and the water level to be detected by the water level gauge unit can be finely adjusted. [Effect of invention]

According to the automatic water supply interruption device of the present invention, the buoy is guided by the outer peripheral surface of the guide pile, and the buoy and the water level gauge body are separated and independently installed, so that the buoy can smoothly move up and down.

Hereinafter, the mode for carrying out the present invention will be described with reference to the drawings.

1 to 29 illustrate an embodiment of the present invention. In the figure, reference numeral 1 denotes an agricultural field such as a paddy field. 2, shows the water supply channel for supplying water to the aforementioned farmland 1 . 3. It shows an automatic water supply shutoff device for automatically shutting off the above-mentioned water supply passage 2 .

The water supply automatic shutoff device 3 includes a water level gauge unit 4 installed in the farmland 1 and detecting that the water level in the farmland 1 has risen to a predetermined water level, and a valve body unit 5 installed in the water supply passage 2 . Here, the valve body unit 5 includes the valve body 6, and when the water level gauge unit 4 detects a predetermined water level, the water supply passage 2 is moved from the open open position to the closed closed position. The water level gauge unit 4 includes a water level gauge body 7 , a water surface buoy 8 that floats in the farmland 1 independently of the water level gauge body 7 , and a fixed stake 9 that is driven into the soil 1 a of the farmland 1 and fixed. Here, the water level gauge main body 7 includes: a main body part 10 fixed to an arbitrary position in the longitudinal direction of the fixed pile 9, and an actuating part that rises by being pushed by the buoy 8 that rises as the water level rises 11. The detection part 12 for detecting the predetermined water level by being provided in the main body part 10 (in detail, in the main body part 10 ) and moving in conjunction with the actuating part 11 . Furthermore, the buoy 8 is provided with a guided portion 8a, which can be guided by the outer peripheral surface of the guide pile 13 driven into the soil 1a of the farmland 1, and can move up and down directly under the actuating portion 11.

In detail, the fixed pile 9 also serves as the guide pile 13 . In addition, the guided portion 8a is constituted by a guided hole 14 which penetrates in the up-down direction and allows the guide pile 13 to penetrate therethrough. In addition, the guide piles 13 have plural numbers, and the guided portions 8a (in detail, the guided holes 14 ) are provided in plural numbers corresponding to the plural guide piles 13 and 13 .

Moreover, the buoy 8 is provided with a plurality of driving instructing parts 8b, 8b, 8b, 8b, 8b, 8b, 8b, 8b, 8b, 8b, 8b, 8b, 8b, 8b, 8b, 8b, 8b, 8b, 8b, 8b, 8b, 8b, 8b, 8b, 8b, 8b, 13b, 8b, 8b, 8b, 8b, 8b, 8b, 8b, 13b, 8b. This piercing instruction part 8b is constituted by an instruction hole 15 which penetrates in the up-down direction and allows the guide pile 13 to be inserted therethrough. In addition, the guided hole 14 serving as the guided portion 8 a is formed to have a larger diameter than the indicator hole 15 . Here, the indicating hole 15 and the guided hole 14 correspond to plural (two in the illustrated embodiment) of the guide piles 13 and 13, and plural numbers are provided (in the illustrated embodiment, each of which will be described later). One on each side of the action portion 8g, two in total), the relative positions of the centers of the plurality of indicating holes 15 and 15 and the relative positions of the centers of the plurality of guided holes 14 and 14 are the same. That is, the plural indicating holes 15 and 15 and the plural guided holes 14 and 14 are moved in parallel or rotationally (in detail, in the up-down direction) by moving the centers of the plural indicating holes 15 and 15 while maintaining the relative positions of those centers. As a rotational movement of the shaft), the positional relationship of those centers can be made to coincide with the centers of the plurality of guided holes 14 and 14 .

Specifically, in the water level gauge unit 4, the main body portion 10 of the water level gauge body 7 includes a case portion 10a that accommodates the detection portion 12, and a plurality of fixed arms 10b extending in a direction away from the case portion 10a. . In the illustrated embodiment, the case portion 10a is formed into a cylindrical shape, and two fixed arms 10b are provided, which are extended from the upper end portion of the case portion 10a to the obliquely downward direction away from the case portion 10a. Here, the main body portion 10 is provided with fixing means 16 for fixing the main body portion 10 to the aforementioned fixing stake 9 . The fixing means 16 includes a positioning fixing portion 16a for fixing the distal end portion of the arm 10b, a fixing hole 16b opening in the positioning fixing portion 16a and allowing the fixing pile 9 to be inserted, and a fixing hole 16b from the inner periphery of the fixing hole 16b. A screw hole 16c (in the illustrated embodiment, the female screw hole of the nut) which penetrates toward the outside, and a fixing bolt 16d screwed into the screw hole 16c and pressing the fixing pile 9 are provided.

The actuating portion 11 of the water level gauge body 7 includes an actuating portion body 11a positioned below the body portion 10, and a pair of support arms 11b and 11b protruding upward from the actuating portion body 11a. The support arms 11b and 11b are inserted into the case 10a through holes 10d and 10d opened in the bottom wall 10c of the case 10a. In addition, in the case part 10a, the guide pin 17 is spanned between the pair of support arms 11b, 11b. Further, the actuating portion 11 is provided with a guided protrusion 11c (see FIG. 7 ) that protrudes upward from the actuating portion main body 11a. Here, the guided protrusion 11c is guided by a hole (not shown) opened in the bottom wall 10c of the case portion 10a, and the actuating portion 11 serves as a guide to the case portion 10a (further, the main body portion). 10) Can move up and down. In addition, the lower surface 11d of the actuating portion main body 11a (actuating portion 11) is recessed in a mortar shape, and the rising float 8 (in detail, the top portion of the action portion 8g of the float 8, which will be described later) becomes the lower surface to be recessed. 11d push. Furthermore, between the actuating portion 11 (in detail, the actuating portion main body 11 a ) and the main body portion 10 (in detail, the case portion 10 a ), a coil spring 18 as an elastic body is provided, and the actuating portion 11 is provided by this The coil spring 18 is urged downward. Then, when the actuating portion 11 is pushed by the ascending buoy 8, it resists the urging of the coil spring 18 and ascends together with the buoy 8 (refer to FIG. 6).

That is, when the water level in the farmland 1 is low, as shown in Figs. Then, the float 8 rises with the rise of the water level, and the float 8 (in detail, the top portion of the action portion 8g described later) is in contact with the lower surface 11d of the action portion 11 . And when the water level further rises, as shown in FIG. 6, the operation part 11 will rise together with the buoy 8.

The detection part 12 of the water level gauge main body 7 is supported in the case part 10a so as to be slidable in the lateral direction (left-right direction in FIGS. 5 and 6 ). Furthermore, as shown in FIGS. 5 to 7 , in the detection portion 12 , a guide hole 12 a which is constituted by an elongated hole and whose longitudinal direction is inclined is opened. In addition, the detection part 12 is located between the pair of support arms 11b and 11b, and the guide pin 17 penetrates the guide hole 12a. Here, when the actuating portion 11 moves up and down with respect to the main body portion 10, the detecting portion 12 is moved in the lateral direction by the engagement (cam mechanism or link mechanism) between the guide pin 17 and the guide hole 12a (in the figure). 5 and FIG. 6, the left-right direction) slides.

And the detection part 12 has the wire connection part 12b, and the inner wire 20a drawn into the case part 10a is connected to this wire connection part 12b. And the outer hose 20b which arrange|positions this inner pull wire 20a inside is supported by the case part 10a.

However, a transmission body 19 is provided between the water level gauge unit 4 (in detail, the main body portion 10 ) and the valve body unit 5 , and the water level detected by the water level gauge unit 4 (in detail, the detection portion 12 ) is determined by This communication body 19 is communicated toward the valve body unit 5 . Here, this transmission body 19 is provided with the cable 20 which has the said inner pull wire 20a and the said outer hose 20b.

Moreover, the water level gauge body 7 is provided with a retractable covering member 22, and the covering member 22 is provided across the body portion 10 and the actuating portion 11 so as to cover the space between the body portion 10 and the actuating portion 11. In the illustrated embodiment, the covering member 22 is formed in an accordion shape, one end side is fixed so as to cover the outer peripheral surface of the main body portion 10 (specifically, the case portion 10a), and the other end side is The outer peripheral surface of the actuating portion 11 (specifically, the actuating portion main body 11 a ) is fixed so as to be covered.

The buoy 8 is hollow and can float on the water surface in the farmland 1, and can move up and down following the fluctuation of the water level. Moreover, the buoy 8 is provided with the opening 8d which faces the interior space 8c which forms a hollow to the exterior, and the cover 8e which closes the opening 8d. This buoy 8 is arranged below the water level gauge body 7 by integrating a disc-shaped buoy body 8f and an action portion 8g protruding upward from the buoy body 8f. In addition, although the indicator hole 15 and the guided hole 14 are formed in the float body 8f, the indicator hole 15 and the guided hole 14 do not pass through the inner space 8c, and both form a peripheral wall across the entire length. These indicating holes 15 and guided holes 14 are formed with the central portion as the boundary, and are generally formed in a tapered shape with a larger diameter as the distance from the central portion becomes larger. Here, the above-mentioned center of the indicating hole 15 and the center of the guided hole 14 means the center of the portion having the smallest diameter (in the illustrated embodiment, the center of the center portion).

And the said opening 8d is provided in the float body 8f. The cover 8e which closes this opening 8d is formed in the shape of a bowl standing up around the periphery, and the cover 8e is attached by being fitted into the opening 8d. In addition, a tongue piece 8x is provided in the cover 8e, and the cover 8e can be removed from the opening 8d by grasping and pulling the tongue piece 8x.

The fixed pile 9 is at least one of the fixed piles (in the illustrated embodiment, one of the two fixed piles), and is provided with a subsidence prevention plate 23 protruding outward to restrict the insertion of the soil 1a insertion length. In addition, in the fixing pile 9 provided with the subsidence preventing plate 23 , a scale 9 a based on the subsidence preventing plate 23 is formed above the subsidence preventing plate 23 . In detail, the subsidence prevention plate 23 is fixed to the middle position of the fixed pile 9, and the subsidence prevention plate 23 is in contact with the soil 1a to limit the insertion length of the fixed pile 9 into the soil 1a, preventing further Insert soil 1a. In the illustrated embodiment, the fixed pile 9 is formed of a round bar and extends in a straight line. The subsidence prevention plate 23 is composed of a flat plate, and is arranged to intersect with the fixed pile 9 at right angles. In addition, the fixed pile 9 penetrates the center of the subsidence prevention plate 23, and the subsidence prevention plate 23 is fixed to the fixed pile 9 by welding or the like.

In addition, the penetration prevention plate 23 is provided with a through hole 23a. In addition, the water level gauge unit 4 is provided with an auxiliary pile 24 for supporting the erection of the fixed pile 9 in addition to the water level gauge main body 7 , the buoy 8 , and the fixed pile 9 . Here, after the fixed pile 9 is driven into the soil 1a, the auxiliary pile 24 is driven into the soil 1a obliquely through the through hole 23a. In the illustrated embodiment, two through holes 23a are provided. The auxiliary pile 24 is formed in a U-shape (U-shape), and the two opposing pile portions 24a are driven into the soil 1a obliquely through the through holes 23a and 23a.

More specifically, the auxiliary pile 24 includes two pile parts 24a, 24a, and a connecting part 24b connecting the two pile parts 24a, 24a from the base end side, and the two pile parts 24a, 24a are fixed to The piles 9 extend parallel to each other on planes that intersect obliquely and are driven into the soil 1a obliquely. On the other hand, in the sinking prevention plate 23, through holes 23a, 23a that penetrate vertically and allow the above-mentioned pile portions 24a, 24a to pass therethrough are on both sides of the fixed pile 9 (preferably, as shown in FIG. (one on each side of the fixed pile 9), and two in total. In addition, the two through-holes 23a and 23a are juxtaposed on a straight line crossing the fixing pile 9 .

Here, among the hole edges of the through-holes 23a, the pile portion is determined by the contact between the hole edges on both the lateral direction 24x side and the opposite side of the inclined pile portion 24a, and the pile portion 24a. 24a with respect to the maximum inclination angle of the fixed pile 9 (refer to FIG. 15 ). Then, the surface 9x on the opposite side of the lateral direction 24x in the fixed pile 9 and the fixed pile contact portion 24c (in the illustrated embodiment, the aforementioned connecting portion 24b) of the auxiliary pile 24 are in contact with each other. , to determine the minimum inclination angle of the pile portion 24a with respect to the fixed pile 9 (see FIG. 15 ). Specifically, the maximum inclination angle is obtained by causing the pile portion 24a to abut on the hole edge of the through hole 23a, the lower end portion 23b on the side of the lateral direction 24x and the upper end portion 23c on the opposite side of the lateral direction 24x side, It is determined that the inclination angle of the pile portion 24a with respect to the fixed pile 9 becomes smaller than the maximum inclination angle by moving the pile portion 24a away from at least one of the lower end portion 23b and the upper end portion 23c.

In the illustrated embodiment, the pile portion 24a is the hole edge on both the lateral direction 24x side and the opposite side of the lower side of the inclined pile portion 24a among the hole edges of the through-hole 23a (23b, 23c in the figure). ) contact, and the connection portion 24b (fixed pile contact portion 24c ) is in contact with the surface 9x on the opposite side of the aforementioned lateral direction 24x side of the fixed pile 9, so that the angle of the pile portion 24a with respect to the fixed pile 9 can be maintained.

The valve body unit 5 is connected to a water channel forming member 2 a (eg, a water supply hard pipe) that forms the water supply channel 2 for supplying water to the farmland 1 . The valve body unit 5 is provided with a valve body case 25 having a flow path space 25a that can pass through the water supply channel 2 inside, and the valve body case 25 is fixed to the water channel forming member 2a. In addition, the valve body 6 is provided in the valve body casing 25, and the valve body 6 opens or closes the water supply channel 2 by opening and closing the flow channel space 25a. In addition, the valve body unit 5 (specifically, the valve body case 25 ) has a connection portion 25 b to which the aforementioned transmission body 19 can be connected.

The valve body case 25 has a bearing portion 25c for pivotally supporting the valve body 6 . The bearing portion 25c is constituted by a hole penetrating the inside and outside of the valve body case 25, and the valve body case 25 is provided on both sides across the flow path space 25a.

The valve body 6 includes a valve body 6a and a shaft portion structure portion 6b, and the valve body 6a and the shaft portion structure portion 6b are connected by a connection portion 6c. The valve body 6a is formed in a disc shape. In addition, the peripheral side of the valve body 6a is formed to be bent obliquely, and the bent portion is in contact with the valve seat 25d provided in the valve body case 25 to block the outflow port 25e of the water flowing out toward the farmland 1, The flow path space 25a (further, the water supply path 2 ) in the valve housing 25 is closed (see FIG. 23 ).

Each end of the shaft portion structure portion 6b is located inside the valve body case 25, and is located at a position facing the bearing portion 25c. In addition, the valve body 6 closes the outflow port 25e in the closed position, and is accommodated in the upper portion of the valve body case 25 in the open position. And, in the shaft part structure part 6b, the rod-shaped core material 6e is provided in this center position. Here, on the outer periphery of the core material 6e, a torsion spring 26 serving as an urging member is attached. One end of the torsion spring 26 is supported on the back surface of the valve body 6 (specifically, the spring holder 6f provided on the back surface of the valve body 6a), and the other end is supported on the top surface of the valve body case 25, The valve body 6 is pushed in the closing direction from the open position toward the closed position.

In addition, the valve body unit 5 has an operating handle 27 . The operating handle 27 includes a base portion 27a having a conical trapezoid shape, a first shaft portion 27b protruding from the back surface thereof, and a handle portion 27c extending from the side surface of the base portion 27a. As shown in FIG. 24 , the operating handle 27 is a bearing portion 25c on which the first shaft portion 27b is inserted into the valve body casing 25, and is fixed to one end of the shaft portion structural portion 6b of the valve body 6. In this case, , the operating handle 27 is connected to one end (further, the valve body 6 ) of the shaft structure portion 6b. The shaft member 28 having the second shaft portion 28a at the other end of the shaft portion structure portion 6b is inserted into the other bearing portion 25c of the valve housing 25, and is attached and fixed to the other end of the shaft portion structure portion 6b. In this case, the valve body 6 and the operating handle 27 (in the illustrated embodiment, there is a shaft member 28) are integrated, and the operating handle 27 is adapted to the rotational movement of the valve body 6 (specifically, the valve When the valve body 6 is in the closed position, the handle portion 27c is in the valve closing position facing downward, and when the valve body 6 is in the open position, the handle portion 27c is in the horizontal direction. valve opening posture.

In detail, the first shaft portion 27b of the operating handle 27 is fixed to one end of the shaft structural portion 6b by means of a small screw 29, and the operating handle 27 is connected to one end of the shaft structural portion 6b (furthermore). , the valve body 6) is connected (see Fig. 24). In addition, the second shaft portion 28a (shaft member 28) is attached and fixed to the other end of the shaft portion structure portion 6b by means of a small screw 30 (see FIG. 24).

In addition, the operating handle 27 is such that the extending direction of the handle portion 27c is a direction perpendicular to the protruding direction of the first shaft portion 27b, and the front end portion of the handle portion 27c, that is, the front end portion of the operating handle 27, The position is shifted in the protruding direction of the first shaft portion 27b to form a flat shape. Moreover, in this front-end|tip part, the to-be-locked hole 27d is opened.

The connection part 25b is provided in the side part of the valve housing 25 which pinches the flow path space 25a. Specifically, the connection portion 25b is formed to protrude to a position equal to the height of the bearing portion 25c (further, the base portion 27a of the operating handle 27). In the illustrated embodiment, the transmission body 19 is connected to the connecting portion 25b through the connecting auxiliary member 31 . That is, the connection auxiliary member 31 is attached to the connection part 25b, and the transmission body 19 is connected to this connection auxiliary member 31 (specifically, it is detachably connected). More specifically, the connection assisting member 31 has a mounting hole 31a opened, and the small screw 32 is screwed into the hole 25f of the connection portion 25b through the mounting hole 31a, so that the connection assisting member 31 is attached to the connection. part 25b (see FIG. 25 ).

In addition, the connection assisting member 31 has a receiving recess 31b for receiving the operating handle 27 (specifically, the front end portion of the operating handle 27) when the valve body 6 is in the open position. More specifically, the connection assisting member 31 includes a substantially cylindrical base end portion 31c and a substantially cylindrical cylindrical portion 31d protruding from the distal end of the base end portion 31c, and the receiving recess 31b is located in the cylindrical portion 31d. It is provided in the back of the said base end part 31c. The above-mentioned mounting hole 31a is opened to penetrate through the receiving recess 31b from the rear surface. In addition, a groove 31e intersecting with the mounting hole 31a is provided in the receiving recess 31b, and the head of the small screw 32 is fitted into the groove 31e. The cylindrical portion 31d is a to-be-connected portion to which the transmission body 19 (in detail, an operation indicator 33 to be described later) is connected, and a female thread 31f is formed on the inner peripheral surface thereof. Moreover, the hole 31g which connects the inside of the cylindrical part 31d and the accommodation recessed part 31b is opened.

The transmission body 19 is provided with the cable 20 as described above, but the inner pull wire 20a of the cable 20 is pulled toward the water level gauge unit 4 when the water level gauge unit 4 detects a predetermined water level. In addition, the transmission body 19 is provided with an actuation instruction body 33 at the front end on the valve body unit 5 side. The operation indicator 33 is provided with an appearance body 34 and an indicator body case 35 that slidably accommodates the appearance and appearance body 34 . In detail, the indicator housing 35 is provided with a male thread 35a on its outer peripheral surface. By screwing the male thread 35a into the female thread 31f of the connection auxiliary member 31, the actuation indicator 33 (transmission body 19) is connected to the connection auxiliary The member 31 is connected and further connected to the connection portion 25b of the valve body unit 5 .

The infestation body 34 is inserted into the valve-opening position through the hole 31g provided in the connection auxiliary member 31 by the above-mentioned sliding so that the locking portion 34a provided at the front end protrudes from the indicator body case 35 (refer to FIG. 28 ). The locked hole 27d of the handle 27 is operated.

In addition, the appearing body 34 has a cable connecting portion 34b connected to the inner cable 20a on the rear end side, and the inner cable 20a is pulled toward the water level gauge unit 4 side, so that the appearing body 34 is in a protruding state. The forward position moves toward the retracted retracted position, and the engaging body 34 (specifically, the locking portion 34a) is disengaged from the locking of the operating handle 27 (specifically, the locked hole 27d), and the urging member also disengages. Just by the urging of the torsion spring 26, the valve body 6 linked with the operating handle 27 moves from the open position (refer to FIG. 28) to the closed position (refer to FIG. 29). Also, in the illustrated embodiment, since the appearing body 34 is accommodated in the indicator body casing 35 , the inner pull wire 20 a is pulled into the indicating body casing 35 and connected to the pull wire connecting portion 34 b of the appearing body 34 . In addition, the outer hose 20b is supported by the indicator case 35 .

Next, the operation and effect of the automatic water supply interruption device 3 constituted as described above will be described. According to this automatic water supply shutoff device 3, the water level gauge unit 4 is installed in the farmland 1 and detects that the water level in the farmland 1 has risen to a predetermined water level. In addition, the valve body unit 5 is provided in the water supply passage 2 for supplying water to the farmland 1, and the valve body 6 provided in the valve body unit 5 is provided when the water level gauge unit 4 detects a predetermined water level (specifically, the water level rises to a predetermined level). water level at the time of the water level), move the water supply channel 2 from the open open position to the closed closed position. Here, the water level gauge unit 4 includes a water level gauge body 7 , a buoy 8 separate from the water level gauge body 7 , and a fixed stake 9 driven into the soil 1 a of the farmland 1 and fixed. In addition, the water level gauge body 7, the body portion 10 is fixed at a suitable position on the fixed stake 9, and the actuating portion 11 is pushed up by the buoy 8 that rises with the rise of the water level, and is located at the body portion 10. The detection part 12 provided (in detail, in the main body part 10 ) detects the aforementioned predetermined water level by moving in conjunction with the actuating part 11 . Here, the buoy 8 is guided by the outer peripheral surface of the guide pile 13, and the guided portion 8a thereof is movable up and down directly under the actuating portion 11. As shown in FIG. Here, foreign matter such as mud hardly stays on the outer peripheral surface of the guide pile 13, and the buoy 8 is separated and independent from the water level gauge body 7 (further, the actuating part 11), so the buoy 8 can move up and down smoothly. That is, since the buoy 8 is guided by the outer peripheral surface of the guide pile 13 and the buoy 8 and the water level gauge body 7 are provided separately and independently, the buoy 8 can move up and down smoothly.

And since the guide piles 13 are plural, if the buoy 8 is guided by those guide piles 13, the buoy 8 can move up and down stably.

In addition, the water level gauge body 7 is provided with a retractable covering member 22 that covers the space between the body portion 10 and the actuating portion 11 . By this covering member 22, foreign matter can be prevented from intruding between the main body portion 10 and the actuating portion 11, and further into the main body portion 10 (specifically, the case portion 10a).

The buoy 8 is provided with a plurality of driving instructing portions 8b and 8b, and can indicate the relative positions of the plurality of guide piles 13 and 13 driven into the soil 1a at a position different from the guided portion 8a. Here, first, the plurality of guide piles 13 and 13 are driven into the soil 1a in accordance with the plurality of driving instructing parts 8b and 8b of the buoy 8 already arranged in the farmland 1 . In this way, the plurality of guide piles 13 and 13 can be correctly fixed at the opposite positions. After that, the buoy 8 is again driven along the outer peripheral surface of the guide pile 13 that has been driven into the guided portion 8 a of the buoy 8 .

The punching indicating portion 8b is constituted by the indicating hole 15, and the guided portion 8a is constituted by the leading hole 14 having a larger diameter than the indicating hole 15. As shown in FIG. In addition, the indicating hole 15 and the guided hole 14 are provided with plural numbers corresponding to the plural guiding piles 13 and 13, and the relative positions of the centers of the plural indicating holes 15 and 15 and the centers of the plural guided holes 14 and 14 are provided. The relative position is to become the same. Therefore, the plurality of guided holes 14 and 14 can surely ensure the clearance with the guide pile 13 .

And at least one of the fixed piles 9 (in the illustrated embodiment, one of the two fixed piles) is provided with a subsidence prevention plate 23 . The sinking amount of the fixed pile 9 to the soil 1a is restricted by the sinking prevention plate 23. That is, the subsidence prevention plate 23 is in contact with the soil 1a, so that the insertion length of the fixing pile 9 into the soil 1a is restricted. Therefore, the insertion length of the fixed pile 9 into the soil 1a, and further, the protruding length of the fixed pile 9 from the soil 1a, can be easily set to a predetermined length. Moreover, the scale 9a with the subsidence preventing plate 23 as a reference (0 scale) is formed above the subsidence preventing plate 23. As shown in FIG. By aligning the scale 9a (for example, aligning the upper surface of the positioning and fixing portion 16a in the water level gauge body 7 with the scale 9a), and fixing the body portion 10 (water level gauge body 7 ) to the fixing pile 9, the body portion can be fixed. The height of 10 is set at a height corresponding to a predetermined predetermined water level detected by the water level gauge unit 4 .

And after the fixed pile 9 is driven into the soil 1a, the pile portion 24a of the auxiliary pile 24 is driven into the soil 1a obliquely through the through hole 23a of the subsidence prevention plate 23. With this inclined pile portion 24a, it is possible to support the fixed pile 9 and prevent the fixed pile 9 from coming out of the soil 1a.

That is, the auxiliary pile 24 is driven into the soil 1a obliquely through the through hole 23a of the subsidence prevention plate 23 . The auxiliary pile 24 prevents the fixed pile 9 from floating, and the auxiliary pile 24 and the sinking prevention plate 23 prevent the fixed pile 9 from moving up and down unexpectedly, so that the main body 10 is stably moved. remain in the specified position.

In addition, the pile portion 24a is fixed to the pile abutting portion 24c by abutting with the hole edges on the lateral direction 24x side and the opposite side of the lower side of the inclined pile portion 24a in the hole edge of the through hole 23a. In the illustrated embodiment, the connection portion 24b) is in contact with the surface 9x on the opposite side in the lateral direction 24x of the fixed pile 9, so that the angle of the pile portion 24a with respect to the fixed pile 9 can be reliably maintained.

When two piles 24a are provided, those piles 24a, 24a pass through the through holes 23a, 23a on both sides of the fixed pile 9 in the sinking prevention plate 23. Therefore, when the pile parts 24a and 24a are arranged on both sides of the fixed pile 9, the fixed pile 9 can be stabilized and the fixed pile 9 can be reliably prevented from coming out. Further, the auxiliary pile 24 is provided with a fixed pile abutting portion 24c (in the illustrated embodiment, the connecting portion 24b), and by striking the fixed pile abutting portion 24c (the connecting portion 24b), the pile portion can be easily removed. 24a into the soil 1a.

Moreover, the buoy 8 is formed in a hollow shape, and by appropriately placing water or the like into the buoy 8 through the opening 8d, and using the water or the like as a weight, the amount of the buoy 8 floating on the water surface of the farmland 1 can be adjusted finely. The detected water level of this water level gauge unit 4. In addition, if the height to be installed of the water level gauge body 7 is higher than the length of the fixed pile 9 (that is, when the length of the fixed pile 9 is insufficient), or if the height from the soil 1a serving as the reference is higher than the length of the fixed pile 9 When the water level gauge body 7 moves the fixed pile 9 up and down to increase the water to the farmland 1, it can be dealt with by increasing the weight of the buoy 8 by water or the like to suppress the floating amount of the buoy 8 to the water surface. In addition, once the water level gauge unit 4 detects a predetermined water level, the valve body unit 5 closes the water supply passage 2, but after that, when a little more water is to be added to the farmland 1, the water or the like is put into the buoy 8 to make the water supply channel 2 closed. When the buoy 8 sinks, it is possible to add water to the farmland 1 by the amount of the sinking height. In addition, when it is desired to add water to the farmland 1 that already has a certain level of water, at the position where the water level is detected by the water level gauge unit 4, the water level gauge main body 7 is fixed to the fixing stake 9, and then the water or the like is released. By entering the buoy 8 and sinking the buoy 8 , water of the amount of the sinking height can be added to the farmland 1 .

In addition, this invention is not limited to the above-mentioned Example, Various other changes are possible. For example, although the fixed piles 9 have both the guide piles 13, the fixed piles 9 and the guide piles 13 may be formed separately instead of both. In addition, the number of the fixed piles 9 and the guide piles 13 may not be plural, but one may be used. Similarly, the guided hole 14 and the indicator hole 15 may be one.

For the vertical movement of the actuating portion 11, the detecting portion 12 slides in the lateral direction, but for example, the actuating portion 11 and the detecting portion 12 are integrated, and the detecting portion 12 moves up and down together with the actuating portion 11. Also can.

In addition, the guided portion 8 a may be formed with a concave portion open to the side of the buoy 8 instead of a hole. Similarly, the punching indicator portion 8b may be formed with a concave portion open to the side of the buoy 8 instead of a hole. Furthermore, the punching indicator portion 8b may only be an indicator arrow formed on the buoy 8 .

In addition, adjustment of the floating amount of the buoy 8 to the surface of the water may be performed by adding water or the like into the buoy 8 , or by reducing the amount of water or the like put into the buoy 8 in advance.

In addition, the driving of the pile portion 24a into the soil 1a may be performed at a smaller angle than the above-mentioned maximum inclination angle determined by the pile portion 24a and the through hole 23a. That is, the driving can be performed at an easy driving angle within the range of the maximum inclination angle or less. In particular, when the farmland 1 is a paddy field or the like and the soil 1a is soft, the driving angle can be changed in the middle of driving. In addition, when this pile part 24a is driven into the soil 1a, the connection part 24b may not be driven until it abuts against the fixed pile 9, but may be stopped before the abutment.

In addition, the two through holes 23a and 23a in the subsidence prevention plate 23 are located at symmetrical positions with the fixed pile 9 as the center, but they are not symmetrical and may be at different distances from the fixed pile 9 . In addition, these two through-holes 23a and 23a may be arranged on a straight line deviating from a straight line crossing the fixed pile 9 in the lateral direction 24x of the lower side of the inclined pile portion 24a as shown in FIG. 30 . In addition, in this case, the distances between the two through holes 23a and 23a and the fixing piles 9 may be the same or different.

In addition, the penetration hole 23a may penetrate through the subsidence preventing plate 23 not straightly in the up-down direction but obliquely. In addition, the two through holes 23a and 23a may not be independent holes, but may be connected to each other.

In addition, the connecting portion 24b of the auxiliary pile 24 does not extend linearly, but may be curved, for example, as shown in FIG. 31 .

Further, the number of the through holes 23a may be one, or three or more.

The auxiliary pile 24 is not limited to being formed in a U-shape (U-shape), for example, it is formed in an L-shape, and includes a single pile portion 24a and a bent portion formed by bending the upper end of the pile portion 24a. The bent portion may constitute the fixed stake contact portion 24c.

1: Farmland 1a: Soil 2: water supply 2a: Waterway forming member 3: Water supply automatic cut-off device 4: Water level gauge unit 5: Valve body unit 6: valve body 6a: valve body 6b: Shaft structure part 6c: Links 6e: core material 7: Water level gauge body 8: Buoy 8a: Guided part 8b: Hit Chun Instructing Department 8c: Internal space 8d: Opening 8e: cover 8f: Float body 8g: Action part 8x: Tongue 9: Fixed pile 9a: scale 9x: face 10: Main body 10a: Shell 10b: Fixed wrist 10c: Bottom wall 10d: hole 11: Action Department 11a: Actuator body 11b: Support wrist 11c: Guided protrusion 11d: Below 12: Checkout Department 12a: Pilot hole 12b: Cable connection part 13: Guide pile 14: Guided hole 15: Indicator hole 16: Fixed means 16a: Positioning and fixing part 16b: Fixing hole 16c: screw hole 16d: fixing bolts 17: Guide pins 18: coil spring 19: Conveyor 20: Cable 20a: Internal Pull Wire 20b: Outer hose 22: Covering components 23: sinking prevention plate 23a: Through hole 23b: lower part 23c: Upper part 24: Auxiliary pile 24a: Pile 24b: Connection part 24c: Fixed pile abutting part 24x: landscape orientation 25: Valve body shell 25a: Flow path space 25b: Connection part 25c: Bearing part 25d: valve seat 25e: flow outlet 25f: hole 26: Torsion spring 27: Operating handle 27a: base 27b: Axis 1 Section 27c: Handle 27d: stuck hole 28: Shaft member 28a: Axis 2 Section 29: Small screws 30: Small screws 31: Connect auxiliary components 31a: Mounting holes 31b: accommodating recess 31c: base end 31d: barrel 31e: groove 31f: Female thread 31g: hole 32: Small screws 33: Action indicator 34: Infested Body 34a: Locking part 34b: Cable connection part 35: Indicator body shell 35a: Male thread 41: Farmland 41a: Soil Surface 42: Water level gauge unit 43: Water level gauge body 43a: barrel 44: Buoy 44a: Through hole 45: Positioning part

[FIG. 1] An embodiment of the present invention is a perspective view of an automatic shut-off device for water supply. [Fig. 2] A perspective view of the water level gauge unit. [Figure 3] The same as the top view. [ Fig. 4] A cross-sectional view taken along the line A-A in Fig. 3 . [ Fig. 5 ] A cross-sectional view taken along the line B-B in Fig. 3 . [ Fig. 6 ] A view corresponding to Fig. 5 when the buoy is raised. [ Fig. 7] Fig. 7 is an enlarged perspective view showing the relationship between the actuation portion and the detection portion. [Fig. 8] A top view of the buoy. [ Fig. 9 ] A cross-sectional view taken along the line C-C in Fig. 8 . [Fig. 10] An enlarged perspective view of the cover. [ Fig. 11 ] A perspective view showing a fixed pile and an auxiliary pile. [ Fig. 12 ] A perspective view of a combination of a fixed pile and an auxiliary pile. [Fig. 13] The same as the front view. [Fig. 14] The same as the top view. [ Fig. 15 ] An enlarged cross-sectional view of a main part taken along the line D-D in Fig. 14 . [ Fig. 16 ] A perspective view of the guide pile passing through the indicator hole of the buoy. [FIG. 17] The same longitudinal sectional view. [ Fig. 18 ] A perspective view when the guide pile passes through the guided hole of the buoy. [FIG. 19] The same longitudinal sectional view. [ Fig. 20 ] A perspective view of the valve body unit as seen from the upper side. [ Fig. 21 ] The same perspective view as seen from the lower side. [Fig. 22] The same as the front view. [FIG. 23] The same longitudinal sectional view. [ Fig. 24 ] A cross-sectional view taken along the line E-E in Fig. 22 . [ Fig. 25 ] A cross-sectional view taken along the line F-F in Fig. 22 . [ Fig. 26 ] In the valve body unit, a perspective view of the appearance body of the actuation indicator body is at the forward position and the valve body is at the open position. [FIG. 27] The same longitudinal sectional view. [ Fig. 28 ] The same diagram corresponds to Fig. 25 . [ Fig. 29] In the valve body unit, a view corresponding to Fig. 25 when the appearing body of the actuating indicator body is at the retracted position and the valve body is at the closed position. [ Fig. 30] Fig. 30 is a view corresponding to Fig. 14 of a modification of the embodiment of the present invention. [ Fig. 31] Fig. 31 is a perspective view of an auxiliary pile according to another modification of the embodiment of the present invention. [ Fig. 32 ] A cross-sectional view showing a conventional water level gauge unit.

1: Farmland

1a: Soil

2: water supply

2a: Waterway forming member

3: Water supply automatic cut-off device

4: Water level gauge unit

5: Valve body unit

7: Water level gauge body

8: Buoy

8a: Guided part

8b: Piling Instructions

8f: Float body

8g: Action part

9: Fixed pile

10: Main body

11: Action Department

13: Guide pile

14: Guided hole

15: Indicator hole

16: Fixed means

19: Conveyor

20: Cable

22: Covering components

23: sinking prevention plate

24: Auxiliary pile

25: Valve body shell

25b: Connection part

25e: flow outlet

27: Operating handle

31: Connect auxiliary components

33: Action indicator

Claims (10)

An automatic cut-off device for water supply, It can automatically block the water supply to the farmland, comprising: a water level gauge unit installed in the farmland and detecting that the water level in the farmland has risen to a predetermined water level, and a valve body unit installed in the water supply channel, The valve body unit is provided with a valve body, and when the water level gauge unit detects a predetermined water level, the water supply passage is moved from an open position to a closed position to be closed, The water level gauge unit is provided with a water level gauge body, a water surface buoy floating in the farmland independently from the water level gauge body, and a fixed stake driven into the soil of the farmland and fixed, The main body of the water level gauge is provided with: a main body part fixed to an arbitrary position in the longitudinal direction of the fixing pile; a detection part that is installed in the main body part and moves in conjunction with the actuating part to detect the predetermined water level, The buoy is provided with a guided portion which is guided by the outer peripheral surface of the guide pile driven into the soil of the farmland so as to be movable up and down just below the actuating portion. The automatic shut-off device for water supply as claimed in claim 1, wherein, The said fixed pile is combined with the said guide pile. An automatic water supply interruption device as claimed in claim 1 or 2, wherein, The guided portion is constituted by a guided hole penetrating in the up-down direction and allowing the guide pile to penetrate therethrough. An automatic water supply interruption device as claimed in claim 1 or 2, wherein, The aforementioned guide piles have plural numbers, and the aforementioned guided portions correspond to the plural numbers of the aforementioned guide piles and are provided with plural numbers. The automatic shut-off device for water supply as claimed in claim 4, wherein, The buoy is provided with a plurality of driving instructing parts for indicating the relative positions of the guiding piles when the guiding piles are driven into the soil at positions different from the guided parts. The automatic cut-off device for water supply as claimed in claim 5, wherein, The aforesaid piling indicating part is composed of an indicating hole which penetrates in the up-down direction and allows the aforesaid guide pile to be inserted through, The guided portion is constituted by a guided hole penetrating vertically and allowing the guide pile to penetrate, and the guided hole is formed with a larger diameter than the indicating hole, and, The indicating holes and the guided holes are provided in plural corresponding to the plurality of the guiding piles, and the relative positions of the centers of the plural indicating holes and the centers of the plural guided holes are the same. An automatic water supply interruption device as claimed in claim 1 or 2, wherein, The main body of the water level gauge is provided with a retractable covering member, and the covering member is provided so as to cover between the main body portion and the actuating portion so as to straddle the main body portion and the actuating portion. An automatic water supply interruption device as claimed in claim 1 or 2, wherein, The water level gauge unit is provided with an auxiliary pile for assisting the erection of the fixed pile in addition to the water level gauge body, the buoy, and the fixed pile. At least one of the above-mentioned fixed piles is provided with a subsidence prevention plate protruding outward to limit the insertion length of the above-mentioned soil, The auxiliary pile is provided with two pile parts extending parallel to each other on a plane obliquely intersecting with the fixed pile and driven into the soil inclination, and a connecting part connecting the pile parts from the base end side, In the subsidence prevention plate, the through-holes that penetrate vertically and allow the pile portion to pass through are provided on each of the two sides of the fixed pile, and two in total are provided, and, The two through holes are arranged on a straight line intersecting the fixing pile, or on a straight line deviating from the straight line intersecting the fixing pile in the lateral direction of the inclined lower portion of the pile portion. An automatic water supply interruption device as claimed in claim 1 or 2, wherein, At least one of the fixed piles is provided with a subsidence prevention plate protruding outward to limit the insertion length of the soil, and a scale based on the subsidence prevention plate is formed above the subsidence prevention plate. An automatic water supply interruption device as claimed in claim 1 or 2, wherein, The buoy is formed in a hollow space, and includes an opening that faces the interior space forming the hollow space to the outside, and a cover that closes the opening.

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